X-ray astronomy has made impressive progress.
射线天文学已取得了引人注目的进展。
I want to discuss a fascinating application that we have in X-ray astronomy.
存在于x射线天文学中的，很令人着迷的应用，即，x射线双星。
X - ray astronomy has made impressive progress.
射线天文学已取得了引人注目的进展。
X - ray astronomy has made impressive progress.
射线天文学已取得了引人注目的进展。
应用推荐